Sewing-machine for felling.



' PATENTED JUNE 21, 1904.

' P, E. KAUPMAN.

SEWING MACHINE FOR PBLLING.

APPLI'OATION FI'LBD 0012.25. 1902.

4 SHEETS-SHEET l.

110- MODEL;

WITNEssEs PATENT-ED JUNE 21, v"1904."

4 SHEETS-MEET z.

Nb MODEL.

No. 763,001. PATENTED JUNE 21, 1904.1

. P. E. KAUPM'ANN. Y SEWING MACHINE Non FELLIN'G.

NrPLIoATIoN FILED 001201002.

:l z I lllllt LOWER NEEDLE o? Y f y Fuif-Hau mm. M i f/ff@ UNiTEDSTATES` PAUL E. KAUFMAN, OF CINCINNATI,

Patented June 21, 1904.

PATENT OFFICE.O

OHIO, ASSIGNOR OF TVVO-THIRDS TO sEwlNG-MACHINE-Fon FELLING..

SPECIFICATION forming part of Letters Patent No. 763,001, dated June 21,1904.

Application filed October 25, 1902. Serial No. 128,772. (No model.)

T all, L11/1,0711, t NM1/y concern:

Be it known that I, PAUL E. KAUFMAN, a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented a new and useful Sewing-` Machine for Felling, of whichthe following is a specilication.

The invention relates to sewing-machines for felling. v

One of the objects of the invention is to provide an improvedcombination o'f creasing and stitch-forming mechanism.

Another object is to provide a mechanism in which the work may lie flaton the work-table and be freely guided thereon without interference fromthe operative parts.

Another object is to provide for the adjustment of the operative partswhereby the machine may be adapted to dierent fabrics and to varyingthicknesses of material.

It further consists in certain details of form, combination, andarrangement, all of which will be more fully set forth in thedescription vof the accompanying drawings.

In the annexed drawings, illustrating my invention, Figure 1 is a sideelevation, partly in section, showing the driving-shaft, cams, vandconnecting mechanism which give motion to my two needle-bars andwork-support. 2 is an end elevation, partly in section. Fig. 3 is asectional view on the line X X, Fig. 1, showing the feed andwork-support actuating mechanism. Figs. 4 and 5 are enlarged dei tailviews of the presser-foot, work-support,

and adjustments, showingthe method of holding and feeding the work. aredetail views. Figs. 9 to 12 are enlarged diagrams of the stitch, showingthe relative movements of the needle and needle-looper. Fig. 13 is aperspective view of one class of the work. produced. Fig. 14 is adiagram showing the relative movements of the respective parts. y

- Similar characters refer to -similar parts throughout the severalviews.

T he frame 1, Figs. 1 and 2, has the general appearance of the standardsewing-machine frames now on the market and is provided with two covers2 and 3, removably held to Figs. 6, 7 and 8l`v I it by screws 4 and 5,respectively, in order to give access to' the mechanism for assembling,cleaning, and oiling.

vThe driving-shaft 6, Fig. 1, rotates in substantial bearings in theframe 1 in the direc- -tion of the arrow by means of power applied tothe hand-wheel 7 through' a belt actuated by any of the usual methods,such as a treadle. `The hand-wheel is rigidly held to the drivingshaftby the set-screw 8. The driving-shaft is held in position axially by thehand-wheel 7 and the pinion 9, the latter being fastened to thedriving-shaft by the pin 10. This pinion makes two revolutions to one ofthe gear 11, with which it meshes. volves on the shouldered stud 42,tapped into the frame 1, and has in one side a cam which engages theroll 12, Fig. 3. This roll revolves on the stud 13, rigidly held in thelever 14, and this lever is fastened to the shaft 15 by means of the pin16. The shaft 15 is pivotally supported at its two ends,respectively, bythe pointed screws 17 and 18. The shafts 19 and 20 are similarlysupported at their respective ends by screws 21, 22, 23, and 24.Fastened to the driving-shaft 6 by pins 42 and 43, respectively, are theflanged and plain feedeccentrics and 26. To the eccentric 25 isoperatively attached by strap 27 and screws 28'and 29 the connecting-rod30. The lower end of this connecting-rod is pivotally attached, by meansof pin 31,-to the arm 32, rigidly fastened, by means of pin 33, to shaft2o., Fig-.- i.'

` The plain eccentric 26 engages the forked arm of the bell-crank lever34,V Figs. l and 3. The other arm of said lever 34v is slotted andadjustably connected to the connectingrod'35 by means of thumb-knurl 36and flattened shoulderscrew 37. The frame 1 is slotted to permitadjustment of the knurled thumb-nut 36. This adjustment regulates thefeed by giving more or less throw 'to the connecting-rod 35, and henceto the feed-dog, as will be hereinafter explained. The shoulder-screw 38fulcrums the bell-crank lever to the frame 1, Fig; 1. The lower end ofthe connecting-rod is pivotally attached to the arm 39 by means of thepin 40,`and this arm The gear 11 revis rigidly held to the shaft 19 bymeans of the .pin 41, Fig. 1. On the front end of the drivingearn 46engages the roll 47, which revolves on' the stud 48, rigidly fastened inthe lever 49. This lever is fulcrumed to the frame 1 by the screw 50 andat its lower end by means of the screw 51 and link 52. A screw 53 isoperatively connected to the needle-bar 54, Fig. 1. Similarly theface-cam 45 engages the roll 115, Fig. 2, rotative on the stud 55, whichis rigidly fastened to the lever 56, and this lever, fulcrumed to theframe 1 by the screw 57, has at its lower end a screw 58. and link 59and a screw 60, through which it is adapted to reciprocate theneedle-bar 61, Fig. 2. The needle-bars 54 and 61 are adapted to slide onthe frame 1 and are held thereto, respectively, by dovetailed strips 98and 99. These strips are fastened to the frame 1 by one or more screws100 and 101, Figs. 1 and 2. Tongued into the needle-bars 54 and 61,respectively, are the needle-holders 102 and 103, Figs. 4 and 5, andheld thereto by screws 104 and 105, thereby to adapt said needle-holderto be adjusted vertically. The upperneedle 106 and lower needle 107 arerespectively fastened to these holders by the bindingscrews 108 and 109.The thread to the lower needle, Figs. 1,v 4, and 5, passes from thespool 73 through tongue 71 and take-up 69 to the veye 110 and thencealong the groove in the bottom of the needle 107 through its eye to thecloth, so as to form the loop on top of the needle. The thread to theupper needle passes from the spool 72 through the tongue and take-up 68to the eye 111, thence to the eye 112 in the needle-holder-103. Thenpassing along' a groove in the top of the needle 106 it goes throughlthe eye to the cloth, forming the loop on the bottom of the needle 106.The presser-foot stem 62 is supported in bearings on the frame 1,Fig. 1. Fastened to this stern by the pin 63 is a collar 64, and on thestem abutting the collar 64 and the frame 1 is a spiral spring 65 undercompression. foot stem by the screw 66 and clearing the frame 1 by aspace slightly greater than the total vertical motion of thework-support 79 is a cam 67, adapted to raise the presserfoot when theneedles are in the correct position. The take-up levers 68 and 69 arerespectively actuated by cams (not shown) in the sides of the drum-cam46. The tensions 70 and 71 are fastened to Athe frame 1 and are adapted,respectively, to operatively grip the threads from spools 72 and 7 3.These spools respectively rotate on studs 74 and 75, Fig. 1. Fig. 2shows an' arm 76, one end of which is rigidly fastened to shaft 15, Fig.4, by pin 77. The other end of saidarm is forked and engages theeccentric 78, Fig. 5. One end Pivoted on top of the presserof thiseccentric enters a hole in the worksupport 79 and is grooved, Fig. 4, sothat after the work-table has been adjusted the point of thebinding-screw 80, which enters the groove, can bind the eccentric. Thearm 81, Fig. 2, which is rigidly fastened to the shaft 20 by a pin 82,Fig. 4, gives vertical motion to the dog and is adjustably and pivotallyconnected to the feed-bar 84 through the pin 86, which has a holethrough it allowing the threaded portion of the link 87 to slideaxially. Y On the link 87 are two knurled thumb-nuts 88 and 89, adaptedto adjust the dog vertically. The upper end of the link 87 is pivotallyconnected to the feed-bar 84 by the pin 90. The arm 83 is rigidlyfastened to the shaft 19 by the pin 113, Fig. 4, and is pivotallyconnected to the feed-bar 84 by the pin 114 and gives horizontal motionto said feed-bar, and hence to the dog 85, which is fastened thereto.The work-support is dovetailed and adapted to slide on the frame 1 andheld thereto by the gib 91, Fig. 4, and this gib is fastened to theframe 1 by screws 92 and 93. On the top of the worksupport 79 is a ridge7 9', adapted to raise the work to the correct position for the needlesto operate upon it, as will be hereinafter more fully described. Thepresser-foot 94 is fastened to the presser-foot stem 62 by the pin 96,Fig. 4. The presser-foot 94 and cX- tension 95, Figs. 8 and 7, each havea hole elongated vertically for the lower needle to work in and to allowthe presser-foot to reciprocate vertically with the work-support 79. Thepressure-foot extension 95 is adjustably fastened to the presser-foot 94by the screw 97, which passes through a slot in the extension andthreads .into a hole in the presser-foot. The object of this adjustmentwill be explained farther on.

The cloth being on the work-support v79, the lining on top and thebinding, as for skirts, in the position shownin Fig. 4, I first adjustmy needles with relation to eachother vertically, thentighten the screws104 and 105. I then adjust their relative relation axially and tightenthe screws 108 and 109. Next I adjust myiwork-support 79 vertically withrelation to the needles 106 and 107 by turning the eccentric 78 untilridge 79 on the support" 79 when at its highest point will raise thecloth and lining to such position that the needle 107 in reciprocatingwill thrust through the binding and lining, but not through the cloth. Ithen adjust the presserfoot extension so as to hold the binding snuglyagainst the lining. A hemmer, one

'of the standard makes, (not shown,) is fastened to the presser-foot andturns this binding in the usual manner just previous toits enteringunder the presser-foot extension 95.

Having described the construction of my improved sewing -machine, I willnow describe its operation in detail.

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Figs 1 and 2.

The shaft 6 and cams 45 and 46 revolving give, through the levers 49 56and their connections, a reciprocating motion in approximately parallelplanes and at approximately right angles to the needle-bars 54 and 61,At the same time the pinion 9, by means of the cam in gear 11 through anarm 14, shaft 15, and arm 76, gives a periodic reciprocating motion tothe work-support 79 and presser-foot stem 62, the feed being actuatedvertically from the iianged eccentric 25 through the connecting-rod 30,arm 32, shaft 20, and arm 61A and horizontally from the plain eccentric26` bell-crank 34, connectingrod 35,'arm 39, shaft 19, and arm 83. Therelative operation of these mechanisms. can more clearly be understoodby a study of Figs. 9`to 12. These figures are enlarged and somewhatdistortedplan views of the lining, binding, threads, stitch, and needlesabove referred to. The black thread is from the lower needle 107 and thewhite is from the upper needle 106. As the shaft 6, Fig. 1, begins torevolve the relative movements of the needles, feed, work support, andpresser-foot is as follows:

In Fig. 9 needle-looper 106 moves backward enough to form a loop.Simultaneously needle 107 thrusts forward through the binding and liningand enters the'loop of the needle-looper, taking the position shown inFig. 10. Then the needle remains stationary, while the needle-loopermoves backward out 'of the previous loop of the needle and remainsstationary, while the needle moves farther forward,drawing up itsprevious loop,

vas shown in Fig. 11.

Then the needle moves backward enough to form a loopand stops while theneedle-looper, which starts simultaneously with it, moves forwardthrough the loop of the needle, as shown by Fig. 12, and then remainsstationary while the needle pulls out of the cloth; but just before theneedle completes this motion the needle-looper moves forward, tighteningits loop. Then the cloth feeds. This completes one revolution of thedriving-shaft 6, and hence all the motions of the needles and feed;I'but as my stitch requires for some classes of work that alternatelythe stitch shall be through the material, then over the material justbefore the next stitch, and just -after the feed the work andwork-support are lowered, and with them the presser-foot andpresser-foot extension, into the position illustrated 'by Fig. 6,allowing the needle 107 at the next stitch to miss the binding andlining, and the work and other parts lowered therewith remain down untilthe stitch is completed; but the work, work-support, and presser-footrisejust before the next feed, so that the feeding conditions areidentical for succeeding stitches. These relative motions of theneedles, feed, work-support, and presser-foot can be easily followed onthe diagram Fig. 14. I

I am thus enabled to provide a sewingmachine for special classes of workin which the stitch-forming elements are delicate and capable ofproducing fine as well as coarse work, in which the operative parts donot obstruct the View of the operator, with which work may be done atthe edge or near the center of large articles, and in which the work ishandled, guided, and manipulated in substantially the same manner as inan ordinary sewing-machine.

Having thus described the invention, what I claim is l. In asewing-machine, the combination of a work-support comprising a ridgeextending in the line of feed, a needle working across the ridge, and alongitudinally-reciprocating thread-carrying needle-looper workingacross the line of the needle alongside of the ridge.,

2. In a sewing-machine, the combination of a work-support comprising aridge extending in the line of feed, a needle working across the ridge,a longitudinally-reciprocating threadcarryingneedle-looper workingacross the line of the needle alongside of the ridge, and means forchanging the relative positions of the work and needle.

A3. In a sewing-machine, the combination of a work-support comprising aridge extending in the line of feed, a needle working across the rridge,means for changing the relative positions of the work and needle,whereby the latter will form some of its loops in and some of its loopsout of the work, a longitudinallyreciprocating. thread-carryingneedle-looper working transversely to the needle alongside of the ridge,and mechanism for operating the needle and needle-looper to cause theloop of each to pass through the loop of the other.

4. The combination of a work-support comprising a ridge extending in theline of feed, a needle working across the ridge, and alongitudinally-reciprocating thread-carrying needle-looper workingacross the line of. the needle alongside of the ridge, said needle andneedle-looper being adjustable transversely with respect to the work. i

5. In a sewing-machinmthe combination of a work-support comprising aridge extending in the line of feed, a needle working across the ridge,means for changing the relative positions of the work and needle so thatthe latter will form some of its'loops through and some above thefabric, and a thread-carryinglooper working across the line of theneedle alongside of the ridge, so that the loops kof the looper will bepassed through theloops of the needle, and the loops of the needle willbe passed through the loops of the looper.

6. In a sewing-machine, the combination of a work-support comprising aridge extending in the line of feed', a needle working across the ridge,means for changing the relative position'sof the work and needle so thatthe latter will form some of its loops through and IOO IIO

some above the fabric, and an auxiliary needle working transversely tothe main needle, alongside of the ridge, and in the direction of thefeed so that each loop of the auxiliary needle will be passed throughone of the loops of the main needle and extended forward so that thenext loop of the main needle may be passed through it before theauxiliary needle recedes.

7. In a sewing-machine, the combination of a work-support comprising aridge extending in the line of feed,a needle working across the ridge,means for periodically changing the relative positions of the work andneedle so that the latter will form some of its loops through and someabove the fabric, an auxiliary needle working transversely to the mainneedle alongside of the ridge so as to pass its loops through the loopsof the first-mentioned needle, and means for adjusting the positions ofthe two needles transversely with respect to the work-support.

8. In a sewing-machine, the combination of a work-support having a ridgeextending in the line of the feed, a needle working across the ridge, alooper reciprocating across the line of the needle alongside of theridge, the movements of said needle and looper being such as to form thestitch herein specified.

9. In a sewing-machine, a work-support having a ridge extending in theline of feed, a needle working across the ridge, means for shifting therelative position of the ridge and needle so that the needle'will formsome of its loops through and some above the fabric, a looper of thecharacter specified reciprocating across the line of the needlealongside the ridge, the movements of the needle and looper beilng suchas'to form the stitch herein specifiet.

10. In a sewing-machine, a work-support having a ridge, a needle workingacross the ridge, means for shifting the relative positions of the ridgeand needle so that the needle will form some of its loops through andsome above the fabric, and a thread-carrying looper of the characterspecified reciprocating across the line of the needle alongside theridge so that the loops of the looper will pass through the loops of theneedle, and the loops of the needle will be passed through the loops ofthe looper to form the stitch herein specified.

11. In a sewing-machine, the combination of a work-support comprising aridge extending in the line yof feed, a needle reciprocating across theridge, means for changing the relative position of the work-support andneedle so that the needle will form some of its loops through and someabove the fabric, and an auxiliary needle working transversely to themain needle, alongside the ridge and in the direction of the feed, sothat each loop of the auxiliary needle Will be passed through oneforward so that the next loop of the main needle will pass through itbefore the auxiliary needle recedes, to form the stitch hereinspecified.

12. In a sewing-machine, a work-support having a ridge and an adjacentsubstantially horizontal support for the work, an arm overhanging theworksupport, stitchforming mechanism supported by and movable relativeto said overhanging arm comprising a needle movable across the ridge,and a longitudinallyreciprocating thread-carrying needle-looper arrangedto work across the line of the needle alongside said ridge.

13. The combination of mechanism for creasing the work, meansindependent of the creasing mechanism, for supporting the free portionof the work at one side of the crease, and stitch forming mechanismsupported above the work-support, and comprising two thread-carryingelements, one to work across the crease for penetrating the work and theother a needle-looper adapted to reciprocate longitudinally at one sideof the crease.

14. In a sewing-machine, creasing mechanism for the work, meansindependent of the creasing mechanism for supporting the free portion ofthe work in a substantiallyhorizontal condition, and a presser-foot andstitching mechanism supported above the work, the stiching mechanismincluding two longitudinally-reciprocating thread-carrying parts, onemovable through the crease and the other alongside of said crease.

15. In a sewing-machine, a work-support having a ridge, and mounted inbearings in the base of the frame, an overhanging arm, a needle mountedat the end of said overhanging arm and arranged to reciprocate acrossthe ridge of the work-support, a presser-foot carried by saidoverhanging arm adaptedto hold the work in place on the work-support, aneedle mounted at the end of said overhanging arm and arranged toreciprocate alongside said ridge, the said needles being so controlledas to time and movements as to respectively thrust through loops formedby the opposite needle.

16. In a sewing-machine, a work-support having a ridge and mounted inbearings in the base of the frame, means for alternately raising andlowering said work-support, an overhanging arm, a needle mounted at theend of said overhangingarm and arranged to reciprocate across the ridgeof the work-support, a presser-foot carried by said overhanging arm tohold the work in place on the work-support, a needle mounted at the endof said overhanging arm andV arranged to reciprocate alongside saidridge, the needles and worksupport being so controlled as to time andmovements that one of the needles will make part of its thrusts throughthe work and part above the work, and so that said needles willrespectively thrust through loops formed by the opposite needle.

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17,. In a sewing-machine, a work-support having a ridge, an overhangingarm, a needle mounted at the end of said overhanging arm and arranged toreciprocate in a substantially horizontal direction across said ridge, apresser-foot adapted to hold the work in place on the work-support, andto follow the vertical movements thereof, a needle also mounted at theend of the overhanging arm and arranged to reciprocate alongside saidridge, the said needles being so controlled as to time and movements astofrespectively thrust through, loops formed by the opposite needle.

18. In a sewing-machine, a work-support having a ridge, an overhangingarm, a needle mounted at the end of the overhanging arm and arranged toreciprocate in a substantially horizontal direction across said ridge, apresser-foot adapted to hold the work in place on the work-su pport, asection adjustable relative to the main portion of said presser-foot toaccommodate work of different dimensions, a needle mounted at the end ofsaid overhanging arm and arranged to reciprocate in a substantiallyhorizontal direction alongside said ridge, the saidneedles being socontrolled as to time and movements as to respectively thrust throughloops formed by the opposite needle.

19. In a sewing-machine, a work-support having a ridge, an overhangingarm, a needle mounted at the end of said overhanging arm and arranged toreciprocate across the ridge of the work-support, means for adjustinglsaid needle vertically relative to the overhanging arm, a presser-footcarried by said overhanging arm adapted to hold the work in place on thework-support` a needle mounted at the end of said overhanging arm andarranged to reciprocate alongside said ridge, the said needles beingso-controlled as to time and movements as to respectively thrust throughloops formed by the opposite needle.

20. In a sewing-machine, a work-support having a ridge, an overhangingarm, a needle mounted at the end of said overhanging arm and arranged toreciprocate across the ridge of the work-support, a presser-foot carriedby the overhanging arm adapted to hold the work in place on thework-support, a needle mounted at the end of said overhanging arm andarranged to reciprocate in a substantially horizontal directionalongside said ridge, means for adjusting said needle verticallyrelative to the overhanging arm, th'e said needles being so controlledas to time and movements as to respectively thrust through loops formedby the opposite needle. f

21. In a sewing-machine, a work-support having a ridge, an overhangingarm, a needle mounted at the end of said overhanging arm and arranged toreciprocate in a substantially horizontal direction across the ridge ofthe work-support, a presser-foot adapted to support and hold the work inplace on the worksupport in front and rear of the needle, and having arecess for the passage of the needle, a needle mounted at the end of theoverhanging arm and arranged to reciprocate in a substantiallyhorizontal direction at right angles to said former needle, the saidneedles being so controlled as to time and movement as to respectivelythrust through loops formed by the opposite needle.

22. In a sewing-machine in combination with a work-support having aridge, two needles operating one across and one parallel with the ridge,mechanism for reciprocating said needles in proper relative time, eachof said needles respectively thrusting through loops formed by theopposite needle.'

23. In a sewing-machine, the combination of mechanism for forming thework into a crease and for feeding the work in the direction of thelength of the crease, and stitchforming mechanism comprising twoelements reciprocatory along straight paths transverse to each other,and one of which is adapted to penetrate the work, and the other ofwhich moves in the direction of the line of feed.

24. In a sewing-machine, the combination of mechanism for forming thework into a crease, feeding the same in the direction of the length ofthe crease, and for intermittently moving the Work in a directiontransverse to the line of feed, and sti tch-forming mechanism comprisingtwo elements reciprocatory along straight paths transverse to eachother, and one of which is adapted to penetrate the work, and the otherof which moves in the direction `of the line of feed.

25. In a sewing-machine, the combination of stitch-forming mechanismcomprising two elements reciprocatory along straight paths transverse toeach other, and one of 4which is adapted to penetrate the work, and theother of which moves in the direction of the line of feed, and awork-support having a ridge eX- tending in the line of feed.

26. In a sewing-machine, the combination of stitch-forming mechanismcomprising two elements reciprocatory along straight paths transverse toeach other, and one of which is adapted to penetrate the work, and theother of which moves in the direction of the line of feed, awork-support having a ridge extending in the line of feed, and mechanismfor intermittently imparting a movement to the work-support transverseto the paths of the stitch-forming elements, whereby the workpenetratingelement will alternately pass free,

of the work.

In testimony whereof I have hereunto set my hand this 20th day ofOctober, 1902..

PAUL E. KAUFMAN. Witnesses:

JULIAN S. RAUH, C. C. MUND.

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